EnviroTech News

Most PFAS results that get thrown out are lost in the field, not the lab. A short checklist of the equipment and habits that keep a sample defensible.

EPA has proposed extending PFOA and PFOS compliance to 2031 and rescinding standards for four other PFAS. The monitoring and reporting timelines from the April 2024 rule are unchanged — initial monitoring is still on the clock.

Tule Subbasin well owners are now measuring monthly, metering large extractions, and filing annual reports with the State Water Board. An update to our 2018 coverage of California groundwater sustainability requirements.

The 2021 MSGP expired February 28, 2026. Existing permittees get an automatic administrative continuance, and benchmark monitoring obligations run uninterrupted while EPA finalizes the 2026 permit.

EPA finalized a rule extending compliance deadlines for CCR management units and has proposed broader amendments to the coal ash regulations. The dates moved; the monitoring obligations did not go away.

EPA released Method 1633A in December 2024, and Methods Update Rule 22 brought PFAS methods into 40 CFR Part 136 for NPDES permits. The method's material restrictions govern your sampling train, not just the lab.